[FIX] Vector Size for SVE instruction set is in free kernel parameters

Remove svcntd() from unknown symbols. This is important when the kernel parameters are analysed further, e.g., by waLBerla. svcntd() should not be treated as a free parameter

src/pystencils/backends/arm_instruction_sets.py

@@ -113,7 +113,7 @@ def get_vector_instruction_set_arm(data_type='double', instruction_set='neon'):
                               vindex.format("{1}") + ')'
         if instruction_set.startswith('sve2') and instruction_set not in ('sve256', 'sve2048'):
             result['streamS'] = f'svstnt1_scatter_u{bits[data_type]}offset_f{bits[data_type]}({predicate}, {{0}}, ' + \
-                                vindex.format(f"{{2}}*{bits[data_type] // 8}") + ', {1})'
+                                vindex.format(f"{{2}}*{bits[data_type]//8}") + ', {1})'
 
         result['+int'] = f"svadd_s{bits['int']}_x({int_predicate}, " + "{0}, {1})"